Free for non-commercial distribution, a general purpose graphing scientific calculator for the Macintosh. It uses a text window, which allows you to see and edit your entire calculation. Formulas can be entered directly and different values can be plugged in for easy "what if" calculating. Simple plotting allows quick visualization of results. General purpose arrays allow calculations involving vectors, complex numbers, matrix algebra etc. 2D arrays can be displayed as grayscale or color images. Several examples are included showing such things as equation solving, curve fitting, vector calculations and numerical solution of differential equations. MathPad does not have all the features of high-end commercial programs such as Mathematica but it can handle fairly sophisticated numerical problems with a much smaller memory requirement (190K).